Consular processing related doubt

Hi all,

I have a general doubt

My spouse H1 is picked now

She doesn’t have masters,all education is outside of USA and she’s on h4 now

  1. is she eligible for consular processing

2)If going through consular process and for H1 stamping ,she can go to home country anytime in three years right?

  1. can she go to Canada and get her H1 stamping? (Consular process for 1st time)?